Rotary motor.



Patented Mar. I8, |902.

No. 695,896. L. E. TROXLER. RDTABY MOTOR. (Applisaton led :Hay 1B, 1901.)

(No Model.) 2 Sheets-Sheet 2.

UNTTED STATES PATENT OFFICE.

LAURENCE E. TROXLER, OF LOUISVILLE, KENTUCKY, lASSIGNOR, OF ONE- HALF TO CHARLES G. SCHAEFER, JR., AND O. II. SCI-IAEFER, OF LOUIS' VILLE, KENTUCKY.

ROTARY MOTOR.

SPECIFICATION forming part of Letters Patent No. 695,896, dated March 18, 1902. Application filed May 1B, 1901. Serial N0. 60,887. (No model.)

To all whom it may concern: Y

Be it known that I, LAURENCE E. TROX- LER, a citizen of the United States, residing at Louisville, in the county of Jefferson and State of Kentucky, have invented a new and useful Rotary Motor, of which the following -is a. specification.

The present invention relates to rotary motors designed to be operated by water, steam, compressedl air, or other suitable motive power; and one of the principal objects is to provide a practical construction that will have no unnecessary portions projecting from the cylinder or casing, so that the motor will occupy an exceedingly small amountof space.

A still further object is to provide a rotary motor having a few simple parts and at the same time employ a construction which will utilize the expansible force of the motive fluid and in which there will be comparatively little back pressure.

In carrying out these objects the construction preferably employed is fully described in the following specification and shown in the accompanying drawings. It will of course be understood that such slight changes may be made from said construction as may fall within the scope of the appended claims.

In the drawings, Figure 1 is a perspective view of a motor embodying the present invention. Fig. 2 is a longitudinal sectional view through the same. Fig. 3 is a vertical cross-section,` and Fig. 4 is a detail perspective View, of the cylinder employed. Figs. 5 and 6 are lperspective views of the heads de'- t`ached from the cylinders.

Similar numerals of reference designate like and corresponding parts in all the figures of the drawings.

. In the embodiment of the invention as shown a cylinder isprovided (designated as a whole by the reference-numeral 10) and comprising an open-ended cylindrical casing having a concentric bore l1.and a counterbore 12, which is eccentric to the axis of theIT concentric bore and terminates short of the ends of the cylinder, thus forming the'integral'bearing-flangesv 13. The cylinder-wall 1s also provided with a longitudinally-disposed inlet-port 14, which terminates at one end of the cylinder and is provided with a plurality of inlet-orifices 15, communicatingwith the interior bore l1.

A rotary piston 16 is located longitudinally within the cylinder 10, this piston being in the form of a cylinder, the diameter of which is equal to the diameter of the concentric bore 11, and extending nearly to the ends of the cylinder. The piston is provided with a plurality of longitudinally-disposed sockets 17, preferably three in number, the length of each being equal to the length of the counterbore 12. In each one of these sockets is slidably mounted apiston-headlS, consisting of a rectangular plate that is arranged to extend across the counterbore 12 in a manner readily understood. A short concentric gudgeon 19 is located at one end of the cylinder,l and a suitable driven shaft 2O projects from the opposite end.

Closing the ends of the cylinder 10 is a pair of cylinder-heads, (designated, respectively, 2l and 22,) oneI of said heads being provided with a concentric boss 23, that fits snugly in the concentric bore of the cylinder, said boss having a socket 24, that receives the gudgeon of the piston. This head is furthermore provided with an inlet-port 25, one end of which communicates with the inlet 14 of the cylinder, while the other end is counterbored and preferably screw-threaded to receive the end of a motive-iuidsupply pipe, as 26. The other head 22 is provided with a boss 27, that fits in` the opposite end of the cylinder 10,

, said head being furthermore provided with a central opening 28, throughwhich the shaft of the piston passes. This head also has an arcuate slot- 29, extending for some distance about the same and passing entirely through and'communicating with the interior bore of the cylinder 10. This slotforms an exhaust-port, as will be hereinafter more fully explained. Suitable bolts fasten both heads in place.

In the specific form shown the inlet-orifices 15 are located a short distance beyond the point where the piston touches the interior face of the cylinder-wall, and one end of the exhaust-port is at an angular distance of two hundredand ten degreesfrom the inletorifices, while the other end is thirty degrees. The movable piston-heads are arranged at equal distances apart, so that the angular distance between each will be one hundred and twenty degrees.

In'operation motive Iiuid obtained from any suitable source Aof supply is conducted by thesupply-pipe 26l to the motor, and passing through theinlet-ports discharges through the orifices 15 behind one of the piston-heads 18. AThis will cause the piston to revolve in the direction showin by the arrow in Fig. 3, and the compartment behind the abutment will continue to take the fluid at full pressure until the next abutment passes the inlet-orifices. The first-named compartment will thus contain compressed tiuid, which exerts an equal pressure per square inch in all directions, but because of thegreater area of therforemost piston-head' a forward pressure will be exerted.Y thereon, and as the compartment en-larges, because of the eccentric con uterbore, the expansion of the fluid will be utilized. This forward pressure will thus continue until the exposed areasof both pisn ton-heads are equal or are in substantially the position shown in Fig. 3. At this point, however," the exhaust-port 29 is uncovered and the motive ilu-id wil'lescape.

It will thus be seen that an yexceedingly 1 simple motor is provided lwhich utilizes the expansive force of the motive iuid and in which a back pressure is reduced to a minimum. Furthermore, theconstruction is such vthat a'verysmall space is occupied and there are no elements or imechanism projecting from the annular walls ofthe cylinder.'

From the foregoing it is thought that the construction, operation, and many advantages of the herein-described' invention will be apparent to those skilled iu the art-without further description, and it will be understood that various changes in the size, shape,

proportion, and minor details of'construetion may be Vresorted to without departing from the spirit or sacricin g any of the advantages of the 'invention'.-l

Having thus described my invention, what I claim as new, and desire to secure' by means of Letters Patent,-is

1. In a rotary motor, the combination wit a cylinder having a smooth peripheral face and a longitudinally-disposed bore, said cylinder beingalso provided with a counterbore-eccentric to the axis of the longitudinal bore and terminating short of the ends of the cylinder, thereby forming integral bearingfianges, of cylinder-heads closing the ends of the cylinder, a motive-fiuid-supply pipe connected to one of the cylinder-heads and having communication with thebore of the cylinder, a rotary piston located within the concentric bore and bearing against said integral lan ges, said piston extending across the counterbore, and movable piston-heads carried by the rotary piston and arranged to project across thiepcounterbore and engage the walls thereof. t-

2. In a rotary motor,'the combination withl a cylinder having a longitudinal bore, of a piston rotatably mounted in the bore', movable pston-heads carried by the piston, heads 1 der being furthermore providedwith a lon- '.gitudinally-disposed inlet-port terminating at one endof the cylinder and provided with a plurality of inlet-orifices communicating with the bore, of a rotary piston located longitudinally inthe concentric bore and bearing upon the lflanges, said vpiston being provided at one end withaconcentric shaft, and at the other end withv a concentric gudgeon, piston-heads carried by the piston and movable across the eccentric counterbore, ahead closing one endofthe cylinder and provided with an inlet-port commuui'cating'with the port of the` cylinder, said cylinder-head being also providedv with a bearing-socket that receives the gudgeon of the piston, and an-V other head closing the opposite end of the cylinder and having an opening through which ing furthermoreprovided with an exhaustport.

#In testimony that I claim the foregoing as 4 the piston-shaft'passes, said latter head be- Y IIO my own I have'hereto axed my signature in I the presence of two witnesses. f A LAURENCE E. TROXLER.` Witnesses: a

OT'ro H. SCHAEFER, J AMES' J. HYMES. 

